refactored tests

lib/src/lib.rs

@@ -44,7 +44,7 @@ pub use failure::Error;
 pub type Result<T> = ::std::result::Result<T, failure::Error>;
 pub use crate::repository::Repository;
 pub use crate::repository::RepositoryConnection;
-pub use crate::store::MemoryRepository;
+pub use crate::store::{MemoryRepository, MemoryRepositoryConnection};
 #[cfg(feature = "rocksdb")]
 pub use crate::store::RocksDbRepository;
 pub use crate::syntax::DatasetSyntax;

lib/src/sparql/eval.rs

@@ -169,14 +169,18 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
                                         )))) as EncodedTuplesIterator<'_>;
                                     }, 
                             Some(pattern_fn) => {
-                                let bindings = pattern_fn(graph_pattern.clone()).unwrap();
+                                match pattern_fn(graph_pattern.clone()) {
-                                let encoded = self.encode_bindings(variables, bindings);
+                                    Ok(bindings) => {
-                                let collected = encoded.collect::<Vec<_>>();
+                                        let encoded = self.encode_bindings(variables, bindings);
-                                Box::new(JoinIterator {
+                                        let collected = encoded.collect::<Vec<_>>();
-                                    left: vec![from],
+                                        Box::new(JoinIterator {
-                                    right_iter: Box::new(collected.into_iter()),
+                                            left: vec![from],
-                                    buffered_results: vec![],
+                                            right_iter: Box::new(collected.into_iter()),
-                                })
+                                            buffered_results: vec![],
+                                        })
+                                    },
+                                    Err(err) => return Box::new(once(Err(err))) as EncodedTuplesIterator<'_>
+                                }
                            },
                         }
                     }
@@ -1644,17 +1648,12 @@ impl<'a, S: StoreConnection + 'a> SimpleEvaluator<S> {
     {
         let mut encoder = self.dataset.encoder();
         let (binding_variables, iter) = BindingsIterator::destruct(iter);
-        let mut combined_variables = variables.clone().to_vec();
+        let mut combined_variables = variables.to_vec();
         for v in binding_variables.clone() {
             if !combined_variables.contains(&v) {
                 combined_variables.resize(combined_variables.len() + 1, v);
             }
         }
-
-        println!("binding_variables: {:?}", binding_variables.clone());
-        println!("variables: {:?}", variables.clone());
-        println!("combined_variables: {:?}", combined_variables.clone());
-        println!("\n\n");
         Box::new(iter.map(move |terms| {
             let mut encoded_terms = vec![None; combined_variables.len()];
             for (i, term_option) in terms?.into_iter().enumerate() {

lib/src/store/mod.rs

@@ -6,7 +6,7 @@ pub(crate) mod numeric_encoder;
 mod rocksdb;
 
 pub use crate::sparql::GraphPattern;
-pub use crate::store::memory::MemoryRepository;
+pub use crate::store::memory::{MemoryRepository, MemoryRepositoryConnection};
 #[cfg(feature = "rocksdb")]
 pub use crate::store::rocksdb::RocksDbRepository;
 

lib/tests/service_test_cases.rs

@@ -2,87 +2,24 @@ use rudf::model::*;
 use rudf::{GraphSyntax, Repository, RepositoryConnection, MemoryRepository, Result};
 use rudf::sparql::{BindingsIterator, GraphPattern, PreparedQuery, QueryOptions, QueryResult, ServiceHandler};
 use failure::format_err;
+use std::io::BufRead;
 
-fn ex(id: String) -> Term {
-  Term::NamedNode(NamedNode::parse(format!("http://example.com/{}", &id)).unwrap())
-}
-
-fn foaf(id: String) -> Term {
-  Term::NamedNode(NamedNode::parse(format!("http://xmlns.com/foaf/0.1/{}", &id)).unwrap())
-}
-
-fn mailto(id: String) -> Term {
-  Term::NamedNode(NamedNode::parse(format!("mailto:{}", &id)).unwrap())
-}
-
-fn literal(str: String) -> Term {
-  Term::Literal(Literal::new_simple_literal(str))
-}
 
-/*
-#[derive(Clone,Copy)]
-struct SimpleServiceTest;
-impl ServiceHandler for SimpleServiceTest {
-    fn handle<'a>(&'a self, named_node: NamedNode) -> Option<(fn(GraphPattern) -> Result<BindingsIterator<'a>>)> {
-      Some(SimpleServiceTest::handle_service) 
-    }
-}
-
-impl SimpleServiceTest {
-  fn handle_service<'a>(graph_pattern: GraphPattern) -> Result<BindingsIterator<'a>> {
-    let repository = MemoryRepository::default();
-    let mut connection = repository.connection().unwrap();
-    let file = b"<http://example.com/s> <http://example.com/p> <http://example.com/o> .";
-    connection.load_graph(file.as_ref(), GraphSyntax::NTriples, None, None).unwrap();
-    let prepared_query = connection.prepare_query_from_pattern(&graph_pattern, None).unwrap();
-    let result = prepared_query.exec(&Some(SimpleServiceTest)).unwrap();
-    match result {
-      QueryResult::Bindings(iterator) => {
-        let (variables, iter) = iterator.destruct();
-        let cloned_iter = iter.collect::<Vec<_>>().into_iter();
-        let new_iter = BindingsIterator::new(variables, Box::new(cloned_iter));
-        Ok(new_iter)
-      },
-      _ => Err(format_err!("Excpected bindings but got another QueryResult"))
-    }
-  }
-}
-*/
 
 #[test]
 fn simple_service_test() {
 
   struct TestServiceHandler;
   impl ServiceHandler for TestServiceHandler {
-    fn handle<'a>(&'a self, named_node: NamedNode) -> Option<(fn(GraphPattern) -> Result<BindingsIterator<'a>>)> {
+    fn handle<'a>(&'a self, _named_node: NamedNode) -> Option<(fn(GraphPattern) -> Result<BindingsIterator<'a>>)> {
       fn pattern_handler<'a>(graph_pattern: GraphPattern) -> Result<BindingsIterator<'a>> {
-        let repository = MemoryRepository::default();
+        let triples = b"<http://example.com/s> <http://example.com/p> <http://example.com/o> .".as_ref();
-        let mut connection = repository.connection().unwrap();
+        do_pattern(triples, graph_pattern, QueryOptions::default())
-        let file = b"<http://example.com/s> <http://example.com/p> <http://example.com/o> .";
-        connection.load_graph(file.as_ref(), GraphSyntax::NTriples, None, None).unwrap();
-        let query_options = QueryOptions::default();
-        let prepared_query = connection.prepare_query_from_pattern(&graph_pattern, &query_options).unwrap();
-        let result = prepared_query.exec(&query_options).unwrap();
-        match result {
-          QueryResult::Bindings(iterator) => {
-            let (variables, iter) = iterator.destruct();
-            let cloned_iter = iter.collect::<Vec<_>>().into_iter();
-            let new_iter = BindingsIterator::new(variables, Box::new(cloned_iter));
-            Ok(new_iter)
-          },
-          _ => Err(format_err!("Excpected bindings but got another QueryResult"))
-        }
       };
       Some(pattern_handler)
     }
   }
 
-  
-  
-
-  let repository = MemoryRepository::default();
-  let connection = repository.connection().unwrap();
-
   let query = r#"
   SELECT ?s ?p ?o
   WHERE
@@ -91,24 +28,18 @@ fn simple_service_test() {
       { ?s ?p ?o
       }
    }
-  "#;
+  "#.to_string();
 
 
-  let query_options = QueryOptions::default().with_service_handler(Box::new(TestServiceHandler));
+  let options = QueryOptions::default().with_service_handler(Box::new(TestServiceHandler));
-  let prepared_query = connection.prepare_query(query, &query_options).unwrap();
+  let results = do_query(b"".as_ref(), query, options).unwrap();
-  let results = prepared_query.exec(&query_options).unwrap();
+  let collected = results.into_values_iter().map(move |b| b.unwrap()).collect::<Vec<_>>();
-  if let QueryResult::Bindings(results) = results {
+  let solution = vec![
-    let collected = results.into_values_iter().map(move |b| b.unwrap()).collect::<Vec<_>>();
-    let solution = vec![
       vec![ Some(ex(String::from("s"))), Some(ex(String::from("p"))), Some(ex(String::from("o"))) ],
-    ];
+  ];
-    assert_eq!(collected, solution);
+  assert_eq!(collected, solution);
-  } else {
-    assert_eq!(true, false);
-  }
-}
-
   
+}
 
 
 #[test]
@@ -118,12 +49,11 @@ fn two_service_test() {
   struct TwoServiceTest;
   impl ServiceHandler for TwoServiceTest {
       fn handle<'a>(&'a self, named_node: NamedNode) -> Option<(fn(GraphPattern) -> Result<BindingsIterator<'a>>)> {
-          println!("Handler called for {:?}", named_node);   
           let service1 = NamedNode::parse("http://service1.org").unwrap();
           let service2 = NamedNode::parse("http://service2.org").unwrap();
           if named_node == service1 { Some(TwoServiceTest::handle_service1) }
           else if named_node == service2 { Some(TwoServiceTest::handle_service2) }
-          else { None} 
+          else { None } 
       }
   }
 
@@ -131,57 +61,23 @@ fn two_service_test() {
   impl TwoServiceTest {
 
     fn handle_service1<'a>(graph_pattern: GraphPattern) -> Result<BindingsIterator<'a>> {
-      let repository = MemoryRepository::default();
+      let triples = br#"
-      let mut connection = repository.connection().unwrap();
-      let file = br#"
         <http://example.com/bob> <http://xmlns.com/foaf/0.1/name> "Bob" .
         <http://example.com/alice> <http://xmlns.com/foaf/0.1/name> "Alice" .
-        "#;
+        "#.as_ref();
-      connection.load_graph(file.as_ref(), GraphSyntax::NTriples, None, None).unwrap();
+      do_pattern(triples, graph_pattern, QueryOptions::default())
-      let query_options = QueryOptions::default().with_service_handler(Box::new(TwoServiceTest));
-      let prepared_query = connection.prepare_query_from_pattern(&graph_pattern, &query_options).unwrap();
-      let result = prepared_query.exec(&query_options).unwrap();
-      match result {
-        QueryResult::Bindings(iterator) => {
-          let (variables, iter) = iterator.destruct();
-          let cloned_iter = iter.collect::<Vec<_>>().into_iter();
-          let new_iter = BindingsIterator::new(variables, Box::new(cloned_iter));
-          Ok(new_iter)
-        },
-        _ => Err(format_err!("Excpected bindings but got another QueryResult"))
-      }
     }
 
-
-
-
     fn handle_service2<'a>(graph_pattern: GraphPattern) -> Result<BindingsIterator<'a>> {
-      let repository = MemoryRepository::default();
+      let triples = br#"
-      let mut connection = repository.connection().unwrap();
-      let file = br#"
         <http://example.com/bob> <http://xmlns.com/foaf/0.1/mbox> <mailto:bob@example.com> .
         <http://example.com/alice> <http://xmlns.com/foaf/0.1/mbox> <mailto:alice@example.com> .
-        "#;
+        "#.as_ref();
-      connection.load_graph(file.as_ref(), GraphSyntax::NTriples, None, None).unwrap();
+      do_pattern(triples, graph_pattern, QueryOptions::default())
-      let query_options = QueryOptions::default().with_service_handler(Box::new(TwoServiceTest));
-      let prepared_query = connection.prepare_query_from_pattern(&graph_pattern, &query_options).unwrap();
-      let result = prepared_query.exec(&query_options).unwrap();
-      match result {
-        QueryResult::Bindings(iterator) => {
-          let (variables, iter) = iterator.destruct();
-          let cloned_iter = iter.collect::<Vec<_>>().into_iter();
-          let new_iter = BindingsIterator::new(variables, Box::new(cloned_iter));
-          Ok(new_iter)
-        },
-        _ => Err(format_err!("Excpected bindings but got another QueryResult"))
-      }
     }
 
   }
 
-  let repository = MemoryRepository::default();
-  let connection = repository.connection().unwrap();
-
   let query = r#"
   PREFIX foaf: <http://xmlns.com/foaf/0.1/>
   SELECT ?name ?mbox 
@@ -196,26 +92,74 @@ fn two_service_test() {
       }
     }
   ORDER BY ?name
-  "#;
+  "#.to_string();
-
+
-  let query_options = QueryOptions::default().with_service_handler(Box::new(TwoServiceTest));
+  let options = QueryOptions::default().with_service_handler(Box::new(TwoServiceTest));
-  let prepared_query = connection.prepare_query(query, &query_options).unwrap();
+  let results = do_query(b"".as_ref(), query, options).unwrap();
-  let results = prepared_query.exec(&query_options).unwrap();
+  let collected = results.into_values_iter().map(move |b| b.unwrap()).collect::<Vec<_>>();
-  if let QueryResult::Bindings(results) = results {
+  let solution = vec![
-    let collected = results.into_values_iter().map(move |b| b.unwrap()).collect::<Vec<_>>();
-    for c in collected.clone() {
-      println!("{:?}", c);
-    }
-    println!("\n\n\n");
-    let solution = vec![
       vec![ Some(literal("Alice".to_string())), Some(mailto("alice@example.com".to_string())) ],
       vec![ Some(literal("Bob".to_string())), Some(mailto("bob@example.com".to_string())) ],
     ];
-    println!("Results: {:?}", collected);
+  assert_eq!(collected, solution);
-    assert_eq!(collected, solution);
+}
-  } else {
+
-    assert_eq!(true, false);
+fn ex(id: String) -> Term {
+  Term::NamedNode(NamedNode::parse(format!("http://example.com/{}", &id)).unwrap())
+}
+
+fn mailto(id: String) -> Term {
+  Term::NamedNode(NamedNode::parse(format!("mailto:{}", &id)).unwrap())
+}
+
+fn literal(str: String) -> Term {
+  Term::Literal(Literal::new_simple_literal(str))
+}
+
+fn make_repository(reader: impl BufRead) -> Result<MemoryRepository> {
+  let repository = MemoryRepository::default();
+  let mut connection = repository.connection()?;
+  connection.load_graph(reader, GraphSyntax::NTriples, None, None).unwrap();
+  Ok(repository)
+}
+
+fn query_repository<'a>(repository: MemoryRepository, query: String, options: QueryOptions<'a>) -> Result<BindingsIterator<'a>> {
+  let connection = repository.connection()?;
+  let prepared_query = connection.prepare_query(&query, &options)?;
+  let result = prepared_query.exec(&options)?;
+  match result {
+    QueryResult::Bindings(iterator) => {
+      let (varaibles, iter) = iterator.destruct();
+      let collected = iter.collect::<Vec<_>>();
+      Ok(BindingsIterator::new(varaibles, Box::new(collected.into_iter())))
+    },
+    _ => Err(format_err!("Excpected bindings but got another QueryResult"))
   }
 } 
 
+//fn pattern_repository<'a>(repository: MemoryRepository, pattern: GraphPattern, options: QueryOptions<'a>) -> Result<Vec<Vec<Option<Term>>>> {
+fn pattern_repository<'a>(repository: MemoryRepository, pattern: GraphPattern, options: QueryOptions<'a>) -> Result<BindingsIterator<'a>> {
+  let connection = repository.connection()?;
+  let prepared_query = connection.prepare_query_from_pattern(&pattern, &options)?;
+  let result = prepared_query.exec(&options)?;
+  match result {
+    QueryResult::Bindings(iterator) => {
+      let (varaibles, iter) = iterator.destruct();
+      let collected = iter.collect::<Vec<_>>();
+      Ok(BindingsIterator::new(varaibles, Box::new(collected.into_iter())))
+    }
+    _ => Err(format_err!("Excpected bindings but got another QueryResult"))
+  }
+}
 
+//fn do_query<'a>(reader: impl BufRead, query: String, options: QueryOptions<'a>) -> Result<Vec<Vec<Option<Term>>>> {
+fn do_query<'a>(reader: impl BufRead, query: String, options: QueryOptions<'a>) -> Result<BindingsIterator<'a>> {
+  let repository = make_repository(reader)?;
+  query_repository(repository, query, options)
+}
+
+//fn do_pattern<'a>(reader: impl BufRead, pattern: GraphPattern, options: QueryOptions<'a>) -> Result<Vec<Vec<Option<Term>>>> {
+fn do_pattern<'a>(reader: impl BufRead, pattern: GraphPattern, options: QueryOptions<'a>) -> Result<BindingsIterator<'a>> {
+  let repository = make_repository(reader)?;
+  pattern_repository(repository, pattern, options)
+}